Debt (Detail) - USD ($) $ in Millions	Dec. 31, 2021	Dec. 31, 2020
Debt Instrument [Line Items]
Senior notes	$ 3,109	$ 3,065
Credit facility, including term loans of $997	1,673	2,471
Mortgage and other debt	109	5
Total debt	4,891	5,541
Series D senior notes 3.75% due October 2023
Debt Instrument [Line Items]
Senior notes	0	399
Series E senior notes 4% due June 2025
Debt Instrument [Line Items]
Senior notes	498	497
Series G senior notes 3.875% due April 2024
Debt Instrument [Line Items]
Senior notes	398	398
Series I senior notes 3.5% due September 2030
Debt Instrument [Line Items]
Senior notes	735	734
Series F senior notes 4.5% due February 2026
Debt Instrument [Line Items]
Senior notes	398	397
Series H senior notes 3.375% due December 2029
Debt Instrument [Line Items]
Senior notes	641	640
Series J senior notes 2.9% due December 2031
Debt Instrument [Line Items]
Senior notes	439
Term Loan due January 2024
Debt Instrument [Line Items]
Credit facility, including term loans of $997	498	498
Term Loan due January 2025
Debt Instrument [Line Items]
Credit facility, including term loans of $997	499	499
Secured Debt
Debt Instrument [Line Items]
Mortgage and other debt	109	5
Revolving Credit Facility
Debt Instrument [Line Items]
Credit facility, including term loans of $997	$ 676	$ 1,474

Amount of short-term and long-term debt and lease obligation.

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